標籤：view utf-8 fun rip 執行 聲明式 scale code pre
開發的兩種方式，1.命令式更加註重的是執行的過程更像考試的解答題2.聲明式更加註重的是執行的結果聲明式是對命令的局部封裝更像考試的選擇題或者是填空題
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title></head><body> <!-- 開發的兩種方式， 1.命令式 更加註重的是執行的過程 更像考試的解答題 2.聲明式 更加註重的是執行的結果 聲明式是對命令的局部封裝 更像考試的選擇題或者是填空題 以一個例子，給數組每一項加10為例 --> <script> var arr=[1,2,3,4,5]; //命令式 var newarr1=[]; for(var i=0;i<arr.length;i++){ var t=arr[i]+10; newarr1.push(t); } console.log(newarr1); //聲明式 let newarr2=arr.map(function(item,index){ return item+10; }); console.log(newarr2); </script></body></html>
開發的兩種方式
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